Crimper paddle



G. W. KARR CRIMPER PADDLE Nov. 19, 1968 5 Sheets-Sheet 1 Filed July 15, 1965 INVENTOR. @[68440 fl. /4 M ATTORNEYS Nov. 19, 1968 cs.- w. KARR I 3,411,259

v CRIMPER FADDLE Filed July 15, 1965 5 Sheets-Sheet 2 INVENTOR. $276440 J A/ 4 13y a/W ATTORNEYS G. W. KARR CRIMPER PADDLE Nov. 19, 1968 5 Sheets-Sheet. s

Filed July 15, 1965 v INVENTOR. 6 4Zfi h/fiep liY wuw /u ATTORNEYS I Nov. 19, 1968 s. w. KARR 3,411,269

CRIMPER PADDLE Filed July 15. 1965 5 Sheets-Sheet 4 0 WEA/FPATP' Q va (271 725? IN VEN TOR.

BY% @WATTORNEYS V Nov. 19, 1968 G. w. KARR 3, 1

CRIMPER PADDLE Filed July 15, 1965 5 Sheets-Sheet 5 INVENTO-R. 6 .563440 h/%e United States Patent Oifice 3,411,269 Patented Nov. 19, 1968 3,411,269 CRIMPER PADDLE Gerald W. Karr, West Chester, Pa., assignor to Beloit Eastern Corporation, Downingtown, Pa., a corporation of Delaware Filed July 15, 1965, Ser. No. 472,124 9 Claims. (Cl. 53-380) ABSTRACT OF THE DISCLOSURE A crimping device for crimping the projecting ends of a wrapper Wrapped about a roll of paper and the like, inwardly along the ends of the roll. The device comprises an individual crimping wheel supported for engagement with each end of the roll. Each crimping wheel is driven by the roll in a direction opposite to the direction of rotation of the roll and is in the form of a disk spaced from the end of the roll and having a body portion extending toward the roll having a face facing and engaging the end of the roll. The body portion includes a plurality of integrally extending spaced blades extending from the plane of the disk to the plane of the face of the body portion and pitched in the direction of the rotation of the roll and sloping from the leading end portions of the blades toward the plane of the face of the body portion.

Objects of the invention This invention relates to improvements in crimpers for crimping a wrapper inwardly along the ends of a wrapped roll of paper and the like.

A principal object of the present invention is to provide an improved form of crimper arranged with a view toward utmost simplicity in construction and efficiency in crimping a wrapper about the ends of a roll of paper.

Another object of the invention is to provide an improved form of crimper having a novel design of crimping wheel for crimping wrappers about the ends of rolls of paper.

A still further object of the invention is to Provide a crimper having crimping wheels rotatably driven by the rotating paper roll and readily positionable to crimp wrappers about the ends of rolls of paper of different diameters and lengths.

Still another object of the invention is to provide a simplified and improved crimper having facing crimping wheels rotatably driven by the wrapper roll of paper in a direction opposite to the direction of rotation of the roll of paper, and positionable to crimp the wrapper over the ends of the roll of paper, either simultaneously with or separately from another wrapping or binding operation.

A further object of the invention is to provide an improved form of crimper particularly adapted for roll wrappers and having an improved crimping wheel having circumferentially spaced blades pitched to tuck and crimp the projecting ends of a wrapper along the ends of a roll of paper.

A still further and important object of the invention is to improve upon the crimpers heretofore in use, by providing a crimping wheel having at least four circumferentially spaced crimping blades contoured to tuck and crimp the projecting end portion of a wrapper, wrapped along a roll of paper along the end of the roll, in which the efficiency of tucking and crimping is attained by the form of the crimping blades pitched in the direction of rotation thereof and sloping from the advance ends of the blades inwardly toward the body portions of the blades and end of the roll of paper about which the wrapper is being crimped.

A still further object of the invention is to provide an improved form of crimping wheel arranged with a view toward simplicity in construction and efiiciency in operation for expeditiously tucking and uniformly crimping the projecting end portion of a wrapper about the end of a roll of paper without tearing the paper.

These and other objects of the invention will appear from time to time as the following specification proceeds and with reference to the accompanying drawings where- III:

FIGURE 1 is a fragmentary generally diagrammatic view in end elevation of a crimper constructed in accordance with the principles of the present invention;

FIGURE 2 is a view in side elevation of one half of the crimper shown in FIGURE 1;

FIGURE 3 is a fragmentary detail view of the crimper carriage and its support;

FIGURE 4 is a fragmentary detail view showing certain details of the feed means for the crimper carriage;

FIGURE 5 is a fragmentary sectional view taken through the crimping and gauge wheels;

FIGURE 6 is an end view of a crimping wheel constructed in accordance with the principles of the present invention;

FIGURE 7 is a sectional view taken substantially along line VIIVII of FIGURE 6', and

FIGURES 8, 9, 10, l1 and 12 are diagrammatic views illustrating certain of the steps of progressively crimping a wrapper to the end of a roll of paper.

In the embodiment of the invention illustrated in the drawings, I have shown in FIGURES 1 and 2, one end portion of the crimper 10 having a crimping wheel 11 at each end of a roll 12, which may be a roll of paper, for inwardly tucking and crimping a wrapper wrapped about the roll 12 and projecting beyond opposite ends thereof, inwardly along the ends of the roll, conditioning the wrapper for the application of outside heads thereto, although outside heads need not necessarily be applied to the inwardly tucked and crimped end portions of the wrapper.

The crimping wheels 11 on each end of the roll are the same and are mounted and are operated in a similar manner so only one crimping wheel and support and actuating means therefor need herein be shown and described.

As shown in FIGURES 1 and 2, each crimping wheel 11 is mounted on a carriage 13 mounted on a transverse from 15 for movement in the direction of the axis of a partially wrapped roll 12 toward and from the ends of the roll, to bring the crimping wheels 11 closely adjacent the ends of a' partially wrapped roll of paper, along which the wrapper is to be tucked and crimped.

The roll of paper 12 is mounted on spaced support drums 16, 16, rotatable about axes parallel to the axis of the roll and rotatably driven to rotate the roll during an operation of tucking and crimping the projecting end portions of the wrapper, along the ends of the roll. The support and drive for the support drums 16, 16 may be of any conventional form and are no part of the present invention, except insofar as the drums form a support and drive means for rotatably driving the roll of paper having a wrapper wrapped thereabout during the crimping of the projecting ends of the wrapper along the ends of the roll of paper.

The transverse frame may be either on the outgoing or incoming side of the support drums 16, 16. In the form of the invention shown, the frame 15 is on the incoming sides of the support drums 16, 16. The carriage 13 has a top plate 17 spaced sufficiently above the top of the frame 15 to provide clearance to accommodate relative movement of the carriage 13 with respect to said frame. The carriage 13 has spaced roller brackets 18 and 19 depending therefrom through transverse slots 20 and 21 respectively leading through the top of the frame 15 and extending therealong in the direction of the axis of the roll of paper being wrapped. The roller brackets 18 and 19 are in the form of plates, one plate forming bearing supports for vertically and laterally spaced rollers 22, 22 engaging the top and bottom surfaces of a track 23 and movable therealong. The track 23 extends inwardly of the web of a channel 24 extending along the frame 15 in the direction of the axis of rotation of the roll 12, for the length of said frame.

The roller bracket 19 has vertical and horizontal rollers or wheels 25 and 26, respectively journalled thereon. The vertical rollers 25 support the carriage for movement along a track 27 extending parallel to the track 23. The horizontal rollers 26 are rotatably suspended from a bracket member 29 extending inwardly of the bracket member 19. The rollers 26 are spaced along the carriage 13 and are guided between the inner side of the track 27 and the outer side of a parallel spaced track 31. The spaced tracks, 27 and 31 provides a guide slot within which the rollers 26 ride to retain the carriage 13 from lateral movement with respect to the frame 15, as it travels therealong. The roller bracket or plate 18 has an attachment 32 extending inwardly therefrom and forming a support for a feed nut 33 threaded on a rotatably driven threaded feed shaft 35 (FIGURE 4). The feed nut 33 may be any conventional form of feed nut which will effect rectilinear movement of the carriage 13 along the tracks 23 and 27 upon rotation of the feed shaft 35.

A motor 36, shown in FIGURE 2 as mounted beneath the top of the frame 15, is provided to drive the shaft 35 and effect movement of the crimping wheels 11, spaced from opposite ends of the roll of paper 12, inwardly toward the ends of the roll of paper upon rotation of said motor, in one direction of rotation of said feed shaft and outwardly of the ends of the roll of paper upon rotation of said motor and feed shaft in an opposite direction. It should here be understood that each carriage has a feed nut 33 secured thereto and that the feed nut on one carriage is of one hand while the feed nut on the opposite carriage is of an opposite hand, to effect movement of the carriages 13 toward or from each other, as the shaft 35 rotates in a forward or a reverse direction.

Rotation of the motor 36 may be controlled under the cyclic control system for the machine, under the control of a feeler (not shown), or electric eye (not shown) to position the crimping wheels 11 in proper relation to tuck and crimp the projecting ends of the wrapper inwardly along the ends of the roll of paper 12, and to reversely move away from each other at the termination of a crimping operation, to accommodate the transfer of the roll of paper from the rotating drums 16, to a heading or transfer station.

The crimping wheel 11 is rotatably mounted on the end of an arm 40 on a shaft 41, projecting inwardly from said arm toward the end of the roll of paper. The shaft 41 may be extensible from a cylinder 41 to effect positioning of the crimping wheels with respect to the ends of a roll of paper independently of the feed nuts 33. Suitable means may be provided to hold said shaft from rotation with respect to the arm 40. The arm 40 is transversely pivoted between side plates 42, 42 of an upstanding post 43, extending upwardly from a base 44 mounted on the base plate 17 of the carriage. A transverse pivot pin 45 is mounted between the plates 42, 42 and forms a pivotal support for the arm 40 intermediate the ends of said arm. The end of the arm 40 between the plates 42, 42 has an upright ear 46, pivotally connected between the furcations of a bifurcated connector 47, as by pivot pin 48. The connector 47 is shown as being on the end of a piston rod 49, extensible from a cylinder 50 depending from a support bracket 51, and suspended therefrom on a pivot pin 53. The support bracket 51 is shown as being welded or otherwise secured to the web of a cross channel 52, connecting the side plates 42, 42 together and as depending from said web.

The cylinder 50 may be an air or other type of fluid pressure cylinder. Air is admitted to the head end of said cylinder will raise the crimping wheel 11 out of the path of a roll of paper 12 at the termination of a crimping operation. The admission of fluid under pressure to the piston rod end of the cylinder 50 will lower the crimping wheel 11 to engage and tuck the overhanging end portion of the wrappert inwardly along an end of the roll of paper and crimp the wrapper thereto, as gauged by a gauge wheel on the shaft 41 and connected with the crimping wheel 11 to rotatably drive said crimping wheel from the rotating wrapped roll of paper.

The gauge wheel 55 is shown in FIGURES 2 and 5 as being in the form of a rubber tire, which may be inflated. The rubber tire is mounted on a rim 54 in a conventional manner. The rim 54 abuts the ends of a hub 54 mounted on the shaft 41 for rotation therewith and suitably secured to said hub. The hub 54 in turn forms a mounting for the crimping wheel 11 on the shaft 41 and is suitably secured thereto.

Thus as fluid under pressure is admitted to the piston rod end of the cylinder 50, the arm 40 will be lowered to lower the crimping wheel 11 to move downwardly along the end of the roll of paper and to engage the gauge wheel 55 with the periphery of the roll of paper, to drive the crimping wheel to effect a radial inward tucking and crimping operation.

The crimping wheel 11 includes an outer disk 70 having a circular periphery arcuate in cross-section and backing up four equally spaced crimping blades 57 extending generally radially of an apertured body portion 56 of the wheel (FIGURE 6). The disk 70 starts the bending over of the wrapper and prevents a leading end portion 63 of the blade, as determined by radius P in plane or contour line D, from striking the wrapper at 90. The body portion 56 and blades 57 each have a base 59 in the plane of the disk 70 and contour line D and a front or crimping face 60 in the plane of contour line A of the blade. Each blade 57 has a tip 61 terminating in a common circumferential linespaced radially inwardly of the periphery of the disk and is pitched from said tip in the direction of rotation of the blade to the leading end portion 63 of the blade in the general planes of contour lines D, B, C and A. The blade 57 slopes inwardly toward the roll of paper from contour line D defining the leading, tucking edge of the blade in the plane of the disk 70 to the plane crimping face 60 along a slope determined by the equally spaced contour lines C, B and A, defining a slope and contour attaining a uniform and progressive tucking and crimping action of the wrapper without tearing or otherwise damaging the wrapper.

It should here be understood that the circumferential spacing of the blades determines the spacing of the crimps of the wrapper and that where a closer spacing of the crimps is desired, or where the same spacing of crimps is desired on a large diameter roll as for a smaller diameter roll, the number of blades may be proportionately increased.

During a crimping operation the crimping wheel is brought downwardly by the arm 40 with the inner crimping face 60 of the wheel closely adjacent the end of the roll. As the wheel is brought downwardly to engage the gauge wheel 55 with the wrapper on the roll, the projecting end portion of the wraper will first be engaged by the circular periphery of the disk 70 and initially bent downwardly of the periphery of the end of the roll. The leading end portions 63 of the blades 57 will then engage the projecting end portion of the wrapper in the planes of contour lines D, C, B and A and progressively fold the wrapper along the end of the roll, and crimp the wrapper to the roll by the crimping face of the blade pressing the inwardly folded wrapper inwardly along the end of the roll.

The contour line A is shown as being formed by a plurality of connected arcs struck by a plurality of radii designated on one blade.

The radii from which the connected arcs are struck to, form the contour line B, are designated on a second blade.

The radii from which the connected arcs are struck to, form the contour line C, are designated on a third blade, while the radii from which the connected arcs are struck to form the contour line D, defining the leading edge of the blade are designated on a fourth blade.

As shown in FIGURE 6 contour line A defines the leading end portion of the crimping face of the blade and is formed from a radius E, the axis of which is on a diametral line intersecting the tip of the blade. The are formed by the radius E is continued by an are formed by a longer radius F, the center of which is disposed to the retreating side of the diametral line and continuing the contour line to a contour line formed by a radius G struck from an arc closer to the center of the wheel and offset beyond the retreating side of the blade 57. The radius F determines the leading edge portion of the blade in plane A and the center of said contour line acts on a common point on the wrapper to generate the crimp.

The radii generating the contour line B at an intermediate level of the blade are designated on the next adjacent trailing blade 57. This contour line is formed on an arc struck by a radial line H, the axis of which is spaced inwardly along a diametrical line extending through the tip 61 of the blade and to the retreating side thereof. The are formed by the radial line H is continued, to change the direction of the contour line at the leading end portion of the blade by an arc generated by a relatively short radial line I. Radial line I in plane B determines the leading edge portion of the blade in this plane and the center of the leading edge portion acts on a common point on the wrapper to generate the crimp.

The are generated by the radial line I is continued by a relatively large radius are formed from a radial line I, the axis of which is disposed outside of the limits of the wheel, to form a uniform continuation of the crimping contour.

In a like manner contour line C is formed from connected arcs struck from radial lines K, L and M generating the contour of the blade from the tip 61 thereof in a counterclockwise direction, to form a uniform contour and continuation of the slope from contour lines A and B and radial line L determines the leading edge portion of the blade in plane C.

The contour line D at the base of the blade is formed by an arc struck from a radial line N the axis of which is at the center of the wheel and is continued to a leading tucking edge 63 by relatively short radial lines 0 and P. The are formed by the radial line P is continued by an are formed by a relatively long radial line Q, the axis of which is spaced outside the limits of the wheel, to generate an arcuate line extending generally parallel to a diametral line extending through the axis of rotation of the wheel. The leading edge portion of the blade at its base is determined by radial line P, and acts on a common point on the wrapper to initiate the crimp.

The retreating edge of the blade is undercut as the blade joins the advance portion of a next adjacent blade,

as indicated by contour lines R and S. The undercut portion of the retreating edge of the blade provides relief for the downwardly tucked Wrapper, to enable the advance sloping portion of the blade, formed by contour lines C, B and A, to further tuck and fold the wrapper along the end of the roll and crimp the wrapper thereto by the crimping face of the blade.

In FIGURES 8, 9, 10, 11 and 12, I have illustrated diagrammatically the positions of the leading end portion 63 of a blade of the crimping wheel in the planes of contour lines D, C, B and A in the steps of crimping a wrapper to the end of a roll of paper.

It may be seen from FIGURE 8 that the circular edge of the disk 70 first bends the end of the wrapper downwardly at an angle determined by the diameter of said disk. The leading tucking edge 63 of the blade on contour line D, as determined by radius P then engages the wrapper at point X and initiates a crimping operation. As the blade continues to rotate the leading edge of the blade on contour line C as determined by radius L will act on the wrapper on the common point X. During continued rotation of the blade 57 the wrapper will be engaged by the leading edge of the blade in the planes of contour lines B and A, as shown in FIGURES 10 and 11, as determined by radii I and F, at the common point X to progressively generate the crimp.

In FIGURES 10 and 11 the fold has been sufficiently formed to bring the wrapper edge out of contact with the disk 70. The wrapper edge therefore is not shown in these two figures.

In FIGURE 12 the position of a crimping blade 57 is shown as the wrapper is folded along the end of the roll. This figure also shows the path of point X during a folding operation and shows how point X falls in the center of contour A during the progression of a crimping operation.

The lengths and centers of radii P, L, I and F in the planes of contour lines D, C, B and A are thus so proportioned and located as to progressively form the wrapper by acting on a common point X on the wrapper to generate the crimp.

In the operation of crimping the projecting end portions of the wrapper wrapped about a roll of paper, along the ends of the roll of paper, the two crimping wheels 11 and the carriages 13 are simultaneously moved inwardly under the control of a feeler, electric eye, or similar control device (not shown), with each crimping wheel 11 in the upwardly extended position shown by broken lines in FIGURE 1. Fluid under pressure may then be admitted to the piston rod ends of the cylinders to draw the piston rods 49 within said cylinders and thereby pivot the arms 40 and crimping wheels 11 downwardly to bring the circumferential edges of the disks 70 into engagement with the projecting end portions of the wrapper and bend the wrapper downwardly to be folded along the ends of the roll, as the gauge wheel comes into engagement with the periphery of the partially wrapped roll of paper. This will start the folding of the wrapper and condition the wrapper to be progressively folded by rotation of the crimping wheel. The roll of paper being rotated by the support rolls 16, 16, the crimping wheel 11 will be rotated by the gauge wheel 55 in an opposite direction to the direction of rotation of the roll, to progressively fold the projecting end portions of the wrapper along the ends of the roll by the progressive engagement of the wrapper, first by the leading edge 63 of the blades 57 formed by radius P in plane D and then by the leading edge portions of the blades, formed by radii L, I and F in the planes of contour lines C, B and A. The outer faces 60 of the blades, being closely adjacent the ends of the roll will then come into engagement with the inwardly tucked wrapper and set the tucked or folded wrapper in close contact with the ends of the roll.

While I have herein shown and described one form in which the invention may be embodied, it may readily be understood that various variations and modifications in the invention may be attained without departing from the spirit and scope of the novel concepts thereof.

I claim as my invention:

1. A crimping wheel for crimping the projecting ends of a roll of paper and the like into engagement with the ends of the roll comprising,

a body portion having a base normally spaced outwardly of the roll during a tucking operation and having a face spaced inwardly therefrom and disposed in general alignment with the end of the roll during a crimping operation,

a plurality of equally spaced blades forming generally radially outward continuations of said base and body and having advance folding end portions in the plane of said base pitched in the direction of rotation of said blades and receding toward the inner end portion of the blades,

the advance faces of said blades sloping from the plane of said base to said face of said body, along predetermined contour lines in equally spaced planes from said base to said crimping face and terminating in the plane of said crimping face to provide a crimping face portion of each blade, forming a crimping continuation of the sloping tucking portion thereof.

2. A crimping wheel in accordance with claim 1, wherein the retreating sides of the next forwardly spaced blades are undercut as the blades approach the leading edge portion of a next rearwardly spaced blade, to provide relief for the wrapper as tucked along the end of the roll.

3. A crimping wheel in accordance with claim 1, Wherein a gauge wheel having a resilient periphery, engageable with the periphery of the partially wrapped roll of paper is provided to rotatably drive the crimping wheel.

4. A crimping wheel for crimping the projecting end of a wrapper along the plane end of a roll of paper and the like comprising,

a body having a plurality of integrally extending spaced blades extending radially outwardly therefrom having plane crimping faces adapted to be positioned adjacent the end of the roll and tucking surfaces pitched in advance of said body to lead said crimping faces,

said blades being inclined from the leading tucking end portions thereof toward said crimping faces along contour lines formed by radii, the axes of which are spaced radially and chordally of the axis of the rotation of said wheel, and the trailing edges of said blades being relieved inwardly on the opposite sides of said body from the crimping faces thereof, to accommodate folding of the wrapper thereunder by the leading tucking end portions of said blades.

5. A crimping wheel for crimping the projecting ends of a wrapper wrapped around a roll of paper and the like, into engagement with the plane ends of the roll of paper comprising,

a disk having a circular periphery and a face facing the end of the roll,

a body having a base in the plane of said face,

a plane face spaced axially of said face of said disk and adaptetd to extend along the end of the roll of paper during a crimping operation,

said body having at least four equally spaced crimping blades extending along said disk forming generally radial outward continuations thereof and having crimping faces in the plane of said plane face of said body and having tips terminating adjacent the periphery of said disk,

said blades being inclined from the crimping faces thereof to said base into leading end portions at said base, pitched in the direction of rotation of said wheel, and the leading folding end portions of said blades being determined by receding contour lines in equally spaced planes spaced from said base to said crimping face and struck from different radii of increasing length, to provide uniformly sloping leading faces acting on a common point on the wrapper to generate the crimp during counter rotation of the roll and crimping wheel.

6. A crimping wheel in accordance with claim 5, wherein each blade has a retreating edge recessed inwardly along the base portion thereof at the inner end portion of the blade and cooperating with said disk to accommodate tucking of the wrapper to be crimped to the end of the roll by the leading end portion of the next rearwardly spaced blade.

7. A crimping wheel in accordance with claim 5, wherein a gauge wheel is spaced from said disk towards the roll of paper and has a resilient face engageable with the wrapper of the partially wrapped roll of paper and serves to gauge said crimping wheel and to drive said crimping wheel in a direction opposite to the direction of rotation of the roll of paper, to crimp a wrapper to an end thereof.

8. In an apparatus for crimping a projecting end portion of paper wrapped about a roll, to the ends of the roll,

a frame,

support drums for the roll extending longitudinally of said frame and rotatably driven to rotate a roll supported thereon,

a carriage guided for movement along said frame at each end thereof and to one side of said drums,

means for simultaneously moving said carriages along said frame toward and from each other,

each carriage having an arm transversely pivoted thereto for movement downwardly over the space between said drums and having a shaft on the end thereof and a gauge wheel on said shaft engageable with the wrapper wrapped about a roll on said drums,

means moving said arm and gauge wheel into engagement with the periphery of a roll and the paper wrapped thereabout,

and a crimping wheel coaxial with and disposed inwardly of said gauge wheel and having a disk having a circular periphery, and a plurality of equally spaced crimping blades between said disk and gauge wheel having advance tucking ends in the general plane of said disk and pitched in the direction of rotation of said wheel and uniformly sloping from said advance tucking end to the inner side of said gauge wheel and tucking the wrapper along the end of the roll to effect the crimping of the wrapper to the end of the roll by the sloping advance tucking end of said crimping wheel.

9. In an apparatus for crimping a projecting end portion of paper wrapped about a roll, to the ends of the roll,

a frame,

support drums for the roll extending longitudinally of said frame and rotatably driven to rotate a roll supported thereon,

a carriage guided for movement along said frame at each end thereof and to one side of said drums,

means for simultaneously moving said carriages along said frame toward and from each other,

each carriage having an arm transversely pivoted thereto for movement downwardly over the space between said drums and having a shaft on the end thereof and a gauge wheel engageable with the wrapper wrapped about a roll on said drums, said gauge Wheel being inflatable and having a resilient periphery,

a crimping wheel mounted on said shaft inwardly of said gauge wheel and adjacent and rotatably driven by said gauge wheel, upon rotation thereof,

fluid pressure operated cylinder and piston means selectively operable to move said arm and gauge wheel into engagement with the wrapper wrapped about the periphery of the roll, to be driven from the roll, and to move said crimping wheel to engage and tuck the wrapper along the end of the roll,

said crimping Wheel having a disk spaced from said References Cited gauge Wheel and having a circular periphery, and UNITED STATES PATENTS a plurality of equally spaced crimplng blades extendlng along said disk in the space between said disk and 2,851,839 9/1958 Himes et a1. 5338O gauge Wheel and having leading tucking ends in the 5 2,893,190 /1959 Lancaster 53--38O plane of said disk and pitched in the direction of rota- 3,290,861 12/1966 P g r 53-2 14 tion of said Wheel, and uniformly sloping from said FOREIGN PATENTS leading ends of said crimping blades to crimping faces extending along the end of the partially wrapped r011 I dunng a cnmPmg operatm- TRAVIS s. MCGEHEE, Primary Examiner.

165,636 12/1958 Sweden. 

